Based out of Portland, Oregon, Thunderegg Productions is an indie RPG publisher. We take our name from the thunderegg, state stone of Oregon. Just as a newly-found thunderegg holds a surprise for whomever was fortunate enough to find it, we hope that our products will have the same effect for your gaming sessions. Taking our inspiration from the stone, our motto is "Wonders Within," and we will do everything possible to live up to that statement!

This product is designed to help Admins run their game smoothly. While it's specifically made for White Lies, it's also broadly compatible with other OSR games.
The print version comes with eight inserts that fit into the Ultimate GM Screen from Hammerdog Games. The admin side has an enemy generator, a section for campaign notes and house rules, a complete reference for combat, action and saving... [click here for more]

Klyron is a nearly dead moon with a long history. Rumors of technological wonders drive the players to search there, but they aren't the only ones who want the treasure. Klyron is packed with natural wonders, treasures and deadly enemies! All of this is compatible with virtually any OSR rule system.
This document is a proof of concept for a project I'm working on called The MIllion Moons of Manza.... [click here for more]

Following on the heels of our popular universal supplements, Character Webs and Species & Socieities, comes Arc Threads. This book is an invaluable resource for GMs of any game system.
Are you pressed for time or lack inspiration to create your story? Arc Threads has all you need to form the broad strokes of a campaign for any RPG in seconds.... [click here for more]

Assimilant Menace! is the first in a new line of supplements for the White Star roleplaying game from Barrel Rider Games. It expands upon the Assimilants, a race of bad guys found in the White Star core rulebook. The book is compatible not only with White Star, but all d20-based OSR games with a foundation on the world's most popular RPG.
Inside are several new variants on the basic model, new... [click here for more]

Power up your wandering ronin and other characters with this new set of six pre-made abilities for B.Y.O. Dungeon or Troika and it's compatible hacks.
For more on this mini-expansion and other content, come check us out at BYODungeon.home.blog.
B.Y.O. Dungeon is an independent production by Thunderegg Productions and is not affiliated with the Melsonian Arts Council. ... [click here for more]

Do you want to get your adventure in quickly? B.Y.O. Dungeon helps you do just that. A hack of the Toika RPG by Daniel Sell, BYOD distills that game for even leaner, faster performance. Character generation takes a few minutes, and combat gets resolved without the table getting bogged down in tactical minutiae.
Like Troika, BYOD is inspired by the classic RPG gamebooks of the 80's and 90's. If you've... [click here for more]

This GM screen lets you run combats, create encounters and more without having to consult the Kaigaku rule book. It's compatible with The Black Hack by David Black, as well as all other Hacks descended from that game. You can also use it with most other OSR games.
This tool is just as much for the players as it is for the GM. The player-facing side includes rules for Combat, Honor, Contacts, Advantage/Disadvantage... [click here for more]

This GM screen lets you run combats, create encounters and more without having to consult the Kaigaku rule book. It's compatible with The Black Hack by David Black, as well as all other Hacks descended from that game. You can also use it with most other OSR games.
This tool is jsut as much for the players as it is for the GM. The player-facing side includes rules for Combat, Honor, Contacts, Advantage/Disadvantage... [click here for more]

B.Y.O. Pirate Quest is the first journal in a line of collaborative setting and adventure chapbooks from Thunderegg Productions. Designed for use with any rules set, it includes notes for use with optional OSR systems. Print out the booklet and fill in the blanks to come up with a thrilling high-seas adventure. Or pass the journal around among your friends so that everyone gets to collaborate on the... [click here for more]

Hey, all. This is a double issue of the Kaigaku Chronicle. It features extensive notes about the courtier and ascetic character classes to give you a richer gaming experience. This supplement also features two random lie event tables, one for each class.
It explores what goes on at court every day so GMs can get a better handle on political games. There's a look at two of the iconic characters from... [click here for more]

In anticipation of the release of the premium version of the Kaigaku RPG comes the Kaigaku Chronicle, a support magazine that fleshes out the game world. There’s lots of information for players and GMs alike, including new schools, adventure locations, NPCs, historical background, fiction and more. It's compatible with all OSR game systems, especially Black Hack, but has lots of useful information... [click here for more]

Ninja, mysterious, silent and deadly. This concise supplement for Kaigaku (plus the Black Hack and other OSR games) has setting information about shadow warriors, plus two new ryu. One is for an unaligned ninja family and the other is for the new lesser clan, the Horokame. Learn how to create illusory doubles or project your mind to find out your enemies' deepest secrets.
There's also a brand new... [click here for more]

With Issue 03 of the Kaigaku Chronicles we visit the ronin, masterless samurai who make their way through life by whatever means necessary.
This issue includes in-depth advice on playing ronin PCs and NPCs. It includes a guide to hacking Kaigakus so that you can make your own warrior schools. There's a spotlight on a new lesser clan, the Mizuki, and their lethal duelist bodyguards.
We've also included... [click here for more]

The Cosmic Warriors RPG combines elegant OSR rules based on David Black's The Black Hack with your favorite Saturday morning cartoon shows and shounen manga! It features a customizable system of unique styles so you can add lots of depth to your character's abilities.
This is a pay-what-you-want title. Your tips go a long way towards helping us get more art like the beautiful pieces on the cover... [click here for more]

Welcome to the first supplement for Cosmic Warriors, the anime-inspired Black Hack OSR game! This adventure is a solo or group scenario that recreates the martial tournament story format so familiar to anime and martial arts films.
It's designed with maximum replay value in mind. There are suprises, premade or random fighters, new styles, rules variants and more. Go ahead and grab it, it's free... [click here for more]

Welcome to the first issue of Despatches! This is going to be a semi-regular supplement for Bill Logan's White Lies RPG, as well as a good resource for GMs of any other espionage game. This issue is free to help give you an idea of what's to come. In future issues we'll be extending content. Regular columns will include Most Wanted, a selection of gangs and criminal organizations, Quartermaster, a... [click here for more]

Do you need a fast barbarian tribe for your game? Roll one up in seconds and have a fleshed-out society for use as a heroic or villainous faction. This book is more than a set of generator tables, it also provides historic and logical background information on real "barbarian" societies, including a look at military tactics.
This book is an expansion of my previous book, Easy Settlements,... [click here for more]

Use this system to create cities on the fly. It's designed for use with the Cepheus Engine rules, but it's useful for any game. While the core Cepheus Engine rules give you the ability to create whole planets at once, this book makes it easy to generate portions of the planet. You can use it for medieval-style or futuristic cities for added flexibility. ... [click here for more]

This product is a logo that you can use to indicate that your proeducts are compatible with the Exodus System RPG. It's free to use, and there are just a few conditions. A more formal write-up is coming, but here's everything in brief:
1. You cannot use "Exodus System" in the title.
2. You can't use any trade dress (logos and such) used by Thunderegg Productions, and you can't indicate that your... [click here for more]

This title is the rules document for the Triskelion Space core book, now funding on Kickstarter!
Hot on the heels of the Exodus System SRD and the Exodus System Core Book comes the Exodus System Sci-Fi SRD. It’s full of brand new content for the bestselling RPG. This is the printer-friendly, art-free version of the book. Your purchase includes a PDF and a Word document for easy hacking.
... [click here for more]

The Exodus System is a new standalone RPG inspired by my favorite systems of all time, including Black Hack, Cortex Prime, Numenera/Cypher System and the Adventurer, Conqueror, King System (ACKS).
Inside is a complete game ready for you to hack. It's suitable for any genre, from stone age historical to sci-fi. Character creation is fast and easy. You get to create your own class by simply choosing... [click here for more]

Do you like the awesome class designs of Pahtfinder but want simpler rules? This is the book for you! We tok five classes based on Pathfinder, the Barbarian, Fighter, Ranger, Rogue and Zealot (Cleric). This is the first release in a series. Imagine futuristic Iron Man-style vigilantes, inter-dimensional summoners, rock star bards and more.
We also plan to put out further advancement and customization... [click here for more]

The White Rook is the first piece in a series of character pieces that are based on the classic strategy game. Matt Bulahao has crfted this powerful figure. SStanding tall above the other fighters, wearing stone armor and wiedling a deadly flail, the white rook brings devastation to any who stand in his path (that is to either side and in front or behind him!).
THE CHOICE IS YOURS.... [click here for more]

Here is a selection of a dozen brand new ships to increase the drama and action of yourMothership games. These are all fighter-class ships that weigh in at between 34 and 68 tons. Besides pre-made antagonist and PC-playable ships, there are new modules and weapons for you to use in both fighters and larger vessels.There are also four pages of ship sheets fore recording your own ships.
Climb into... [click here for more]

This book is designed for players and GMs alike to create their very own ships as quickly as a couple minutes. It's fully compatible with the White Star Roleplaying Game, and ports easily over to any other OSR system, if it's not already 100% compatible.
It goes beyond the basics of starships presented in the White Star core rulebook to allow deeper customization with a standardized point-buy system.... [click here for more]

The Village of Henjinmura is a peaceful place within Kaigau that holds a forbidden secret. It's inhabited by animals in human form whose descendents were transfomred by contact with the kiseki, or miracle stones. The Henjin live in isolation to prevent anyone from discovering their true nature.
You get a map of the city, writeup of various locations and NPCs and a new ryu with abilties for bushi,... [click here for more]

This special bundle product contains the following titles.Chronicle of the Courtier and AsceticRegular price: $1.20 Bundle price: $1.00 Format: Watermarked PDF Hey, all. This is a double issue of the Kaigaku Chronicle. It features extensive notes about the courtier and ascetic character classes to give you a richer gaming experience. This supplement also features... [click here for more]

From industry veteran artist Mike Leonard comes these beautiful Japanese-themed miniatures. They're ideal for your games of Kaigaku or any other samurai RPG.
The set contains 4 unique characters, each of which comes in three different color schemes. You can print out the characters with bases, or a full sheet of all twelve varieties. The classes represent each of the four classes in Kaigaku: ascetics,... [click here for more]

Kaigaku brings dramatic samurai action back to your tabletop! It's based on the innovative Black Hack rules set originally created by David Black. This game is easy to learn and you can get a party of characters created and a game started in just minutes.
This samurai RPG allows you to become a mighty bushi, a devious courtier, a stealthy ninja or a powerful ascetic martial artist and defend the... [click here for more]

The Kaigaku RPG is a retroclone that blends simple OSR rules (by way of the Black Hack) and inspiration from famous samurai-themed games. You can use this book to play intense duels between bushi, wars of words among courtiers, ninja missions and more.
This book is the free, no-art, no-frills version. It has everything you need to play. You can support the development by purchasing the premium... [click here for more]

Check out these two brand new ryu for use with Kaigaku and all other Black Hack games. The Burning Wind Raider charges foes on horseback or on foot and mows down all opposition while the Aurora Blade Hashishin uses their momentum to become a deadly blur.
These are just a small sample of the other character options coming up in Kaigaku: The Ruined Kingdom, now funding as part of a 7-day challenge... [click here for more]

As a result of community support for this title, 10% of the proceeds are now going to the Make-A-Wish Foundation!
This is the core book for the second edition of our bestselling Kaigaku RPG. Based on Stars Without Number Revised, by Kevin Crawford, it brings a more modern rules set to the game, while still respecting what's come before.
Visit the perilous and beautiful land of... [click here for more]

Are you a GM who feels like they deserve something more out of the game? Then get ready to become wealthy beyond your wildest dreams!* With the Microtransaction system and its revolutionary d$ "dice" you can now make all sorts of money off of your players! The first page in the rules for this system can be grafted into any OSR or 5E game, allowing you to raise the stakes for your players and to bring... [click here for more]

Following hot on the heels of the Exodus System SRD comes the first preview for our upcoming NexEarth setting. This supplement details the timeline of mankind's flight from the doomed planet Earth to their arrival at NexEarth.
In the centuries since Planetfall mankind has learned how to thrive in harmony with the will of their planet. This supplement gives a brief overview and introduces the Proclaimers... [click here for more]

Use this deck of cards in place of dice for fast and easy results for your games. They're compatible with virtually any RPG, but are especially designed for Black Hack and other OSR systems.
Each card features results of 1d4, 1d6, 1d8, 1d10, 1d12 and 1d20. It also includes a series of stats and abilities that you can use to flesh out NPCs. These cards allow ou to randomly determin motivations for... [click here for more]

Have you ever wanted to play the lord of akingdom, but really didn't want to have to keep track of every last farmer, man-at-arms and cow in your territory? This supplement features a fast and versatile system for running your own faction.
Following a "kingdom-as-character" model, you create your clan, tribe or nation at character generatin or at any other point in the campaign. From there your... [click here for more]

Get the most out of your games with Thunderegg Productions' OSR Sci Fi GM Screen. Designed with the White Star Roleplaying Game's rules in mind, it's also compatible or easily portable to other SF OSR RPGs, including Stars Without Number, Hulks & Horrors and more.
In addition to being a GM screen, we've included a printer-friendly version so you can have one-page combat references and player... [click here for more]

Setting Works: Near-Future Detective is the first in a planned series of supplements designed to help you create a more immersive roleplaying experience, whether you're a player or the GM. This one's free so you can get a feel for what the line entails.
This supplement includes a wealth of information to help you flesh out your cyberpunk or hard sci-fi crime stories, no matter which game system... [click here for more]

Setting Works: Near-Future Rescue Worker continues the series of supplements designed to help you create a more immersive roleplaying experience, whether you're a player or the GM.
This supplement includes a wealth of information to help you flesh out your cyberpunk or hard sci-fi disaster stories no matter which game system you use. With a little tweaking it's even ideal for use with contemporary... [click here for more]

Have you ever wanted to tear things up as an enormous shapechanging robot? Well now you can! This complete game takes the Black Hack OSR rules and reskins them for intense Saturday morning action.
Inside you get four classes, the Infiltrator, Officer, Tech and Warrior. There are also rules for creating your own alternate mode so you can turn from a robot to a car and back again.
The weapons... [click here for more]

This special bundle product contains the following titles.Shifter BotsRegular price: $4.00 Bundle price: $4.00 Format: PDF Have you ever wanted to tear things up as an enormous shapechanging robot? Well now you can! This complete game takes the Black Hack OSR rules and reskins them for intense Saturday morning action.
Inside you get four classes, the Infiltrator,... [click here for more]

The fun of Shifter Bots continues with this mini supplement that contains rules for playing as human mecha pilots! Inside there are also new powerful artifacts, a roster of random enemies and more. It features the same fast play that you're used to from The Black Hack with 80s-inspired robot combat.
This is part of the Shifter Bots bundle, which costs the same as the Shifter Bots core book. We're... [click here for more]

Species and Societies is a companion Thunderegg Productions' popular book, Character Webs, although either book can be used standalone. This book features systems that allow you to randomly or directly create new species for your games, and a series of kits that convert these species into PC-playable races for six, yes, six different RPG systems!
The book also features a generator for the cultures... [click here for more]

This image of a centaur burial mound with statues comes from artist Randy Musseau. IT's suitable for use in all sorts of publications or as a GM handout.
It measures 3300 x 4800 pixels, which is 11" x 16" at 300 dpi. This image has a white background. ... [click here for more]

This image of a male centaur with spear is suitable for your pbulications or GM handouts.
It measures 2000 x 2727 pixels, or 6.6" x 9" at 300 dpi. This image has a transparent background. ... [click here for more]

This image of a female centaur with mohawk mane is ideal for any fantasy game or for your MG handouts. It's a full-body drawing. The character features armor, weaponry and a tattoo design inspired by Scythian riders.
It measures 2000 x 2727 pixels, or 6.6" x 9" at 300 dpi. This black and white illustration has a transparent background. ... [click here for more]

Journey into a world of new possibilities. Where you can become more than a mere man. This is the first issue in the Compleat Beastman series. Every issue is dedicated to an archetype of half-man, half-animal hybrids. In this case we're starting with the most iconic species of all, the centaur.
In other games beastmen like the centaurs get relegated to serving as mindless NPC fodder for the players... [click here for more]

The Exodus System takes classic OSR games and adds modern innovations. This book is suitable for playing sci-fi, fantasy, and all sorts of other genres. It takes inspiration from such other systms as Savage Worlds and the Cypher System.
For Players:
-Fast Character Creation: Get a PC made in minutes
-Versatile Options: Every character is useful at something, both in and out of combat
-Create-a-Class:... [click here for more]

The Sci-Fi expansion for The Exodus System allows you to take your games into space and beyond. A standalone supplement for the bestselling Exodus System RPG, this is a vastly expanded book that includes tools to make it easier for you to play games in space, on alien worlds or even in cyberspace. It's expanded beyond the basic Sci-Fi SRD with new rules for mass battles, new Flavors, and more
Character... [click here for more]